4.1 Footing depth and spacing Footing should be carried below: The frost line -Zones of high volume change due to moisture fluctuation Topsoil or organic material ■Peat and muck Unconsolidated material 园 超4.1 Footing depth and spacing ▪ Footing should be carried below: ▪ The frost line ▪ Zones of high volume change due to moisture fluctuation ▪ Topsoil or organic material ▪ Peat and muck ▪ Unconsolidated material